Withdrawal
1. The generator can be located in front, on the right or left side of the engine (depending on its type) and is driven by a belt from a pulley at the front end of the crankshaft. Apply the handbrake, then jack up the front of the vehicle and place it on axle stands. Remove the lower engine protection plate.
2. Disconnect the negative cable from the battery (see chapter 3).
3. Remove the auxiliary drive belt from the alternator pulley.
4. Disconnect the charge warning lamp wiring from the alternator. On some models, the plastic cover must be removed to gain access to the rear of the generator.
5. Remove the protective cover and unscrew the nut, then disconnect the positive wire from the generator terminal.
6. Unscrew and remove the lower and then the upper mounting bolts, then remove the generator from the bracket (see illustrations).
Bulkhead
Note: The voltage regulator and brushes can be removed without removing the alternator. However, the following disassembly procedure requires the removal of the alternator.
7. Clean the generator from dirt.
8. Turn off screws, get a voltage regulator and brushes. If the brushes are less than the specified minimum length, they must be replaced with the voltage regulator assembly.
9. Mark the alignment of the casing and stator relative to each other.
10. Grab the pulley in a vise, unscrew the nut and remove the washer, pulley and fan with gaskets.
11. Turn off coupling bolts and disconnect a forward casing with a rotor.
12. Remove the rotor from the front casing, remove the gaskets.
13. Remove mounting plate and screws. Knock the bearing out of the front housing with a soft metal drift.
14. Remove the bearing from the end of the rotor, do not damage the generator rings.
15. Turn off the screw, disconnect contact, get the condenser from a back casing.
16. Remove the clamp nuts, then remove the washers, gaskets, and insulator from the rear casing.
17. Carefully separate the stator from the rear casing without disconnecting the wire. Mark the location of each wire, unsolder them, try not to overheat, so as not to damage the diodes. Long-nosed pliers can be used as a heat sink.
18. Remove the screws, separate the diode plate from the rear casing.
19. Remove the wave gasket from the rear casing.
20. Ring the stator windings by connecting an ohmmeter or incandescent test lamp between each wire and the outer ring. There should be no closure. Check the internal resistance between the wires and compare with the data in the Specifications by connecting an ohmmeter between wires 1 and 2, then 1 and 3, and 2 and 3 - the numbering of the wires does not matter.
21. Using an ohmmeter, measure the resistance of each diode and compare with the data in Specifications, by connecting an ohmmeter to the diode leads in one direction. Turn the wires over and check that there is no resistance in the other direction.
22. Check the rotor windings for short circuits by connecting an ohmmeter or test lamp between each slip ring and winding core. Measure the internal resistance of the winding and compare with the data in Specifications, by connecting an ohmmeter between the two springs.
23. Clean all components, prepare new bearings, brushes, etc.
24. Assembly is carried out in the reverse order.
Installation
25. Install in reverse order, securely tighten the mounting bolts (see illustration).
Visitor comments